Question #28

Practice Question

Concept Applied

Using $r = \frac{mv}{qB}$, substitute $m=1.67\times10^{-27}\,\text{kg}$, $v=2.0\times10^{6}\,\text{m/s}$, $q=1.6\times10^{-19}\,\text{C}$, $B=0.5\,\te...

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Question #29

Practice Question

A.2.5 cm
B.0.025 m
C.5 cm
D.0.05 m

Concept Applied

The magnetic force provides the centripetal force: $qvB = mv^{2}/r$. Solving for $r$ gives $r = \frac{mv}{qB} = \frac{2\times10^{-27}\times10^{6}}{1.6...

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Question #30

Practice Question

A.$0.05 \Omega$
B.$0.5 \Omega$
C.$0.005 \Omega$
D.$0.1 \Omega$

Concept Applied

Shunt $S = (G I_g) / (I - I_g)$. Calculation yields approx $0.05 \Omega$....

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Question #31

Practice Question

A.$\frac{\mu_0 I}{2R}$
B.$\frac{\mu_0 I}{2\pi R}$
C.$\frac{\mu_0 I}{4\pi R}$
D.$\frac{\mu_0 I}{R}$

Concept Applied

Using Biot-Savart law, field at center of loop is $\frac{\mu_0 I}{2R}$...

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Question #32

Practice Question

A.
.2 \times 10^{-5}\,\text{N/m}$
B.
.$3.6 \times 10^{-5}\,\text{N/m}$
D.$4.8 \times 10^{-5}\,\text{N/m}$

Concept Applied

Use $\frac{F}{l} = \frac{\mu_0 I_1 I_2}{2\pi d}$; plug in values to get

.2 \times 10^{-5}\,\text{N/m}$....

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Question #33

Practice Question

A.$4\pi \times 10^{-4}$ T
B.
.$8\pi \times 10^{-4}$ T
D.$\pi \times 10^{-4}$ T

Concept Applied

Use $B = \mu_0 n I$ for infinite solenoid....

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Question #34

Practice Question

A.0.04 \Omega
B.0.2 \Omega
C.0.5 \Omega
D.2 \Omega

Concept Applied

For a shunt resistor $R_s$, $R_s = \frac{I_g R_g}{I_{max} - I_g}$. Substituting $I_g = 0.01\ \text{A}$, $R_g = 2\ \Omega$, $I_{max}=0.5\ \text{A}$ giv...

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Question #35

Practice Question

A.$ 0.02\ \Omega $
B.$ 0.2\ \Omega $
C.$ 0.1\ \Omega $
D.$ 0.01\ \Omega $

Concept Applied

To convert a galvanometer into an ammeter, a shunt resistance $ R_s $ is connected in parallel. Using the formula $ R_s = \frac{I_g G}{I - I_g} $, whe...

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Question #36

Practice Question

Concept Applied

The force between two parallel currents is given by $F = \frac{\mu_0 I_1 I_2}{2\pi d}$. Substituting the values, we get $F = \frac{4\pi \times 10^{-7}...

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Question #37

Practice Question

A.$\frac{\mu_0 I B}{2r}$
B.$IB\pi r^2$
C.
.$0$

Concept Applied

The net magnetic force on a current-carrying closed loop in a uniform magnetic field is zero. Although individual elements experience forces, they can...

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Question #38

Practice Question

Concept Applied

Using $r = \frac{mv}{qB}$, substitute $m=1.67\times10^{-27}\,\text{kg}$, $v=2.0\times10^{6}\,\text{m/s}$, $q=1.6\times10^{-19}\,\text{C}$, $B=0.5\,\te...

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Question #39

Practice Question

A.2.5 cm
B.0.025 m
C.5 cm
D.0.05 m

Concept Applied

The magnetic force provides the centripetal force: $qvB = mv^{2}/r$. Solving for $r$ gives $r = \frac{mv}{qB} = \frac{2\times10^{-27}\times10^{6}}{1.6...

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Question #40

Practice Question

A.$0.05 \Omega$
B.$0.5 \Omega$
C.$0.005 \Omega$
D.$0.1 \Omega$

Concept Applied

Shunt $S = (G I_g) / (I - I_g)$. Calculation yields approx $0.05 \Omega$....

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Question #41

Practice Question

A.$\frac{\mu_0 I}{2R}$
B.$\frac{\mu_0 I}{2\pi R}$
C.$\frac{\mu_0 I}{4\pi R}$
D.$\frac{\mu_0 I}{R}$

Concept Applied

Using Biot-Savart law, field at center of loop is $\frac{\mu_0 I}{2R}$...

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Question #42

Practice Question

A.
.2 \times 10^{-5}\,\text{N/m}$
B.
.$3.6 \times 10^{-5}\,\text{N/m}$
D.$4.8 \times 10^{-5}\,\text{N/m}$

Concept Applied

Use $\frac{F}{l} = \frac{\mu_0 I_1 I_2}{2\pi d}$; plug in values to get

.2 \times 10^{-5}\,\text{N/m}$....

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Question #43

Practice Question

A.$4\pi \times 10^{-4}$ T
B.
.$8\pi \times 10^{-4}$ T
D.$\pi \times 10^{-4}$ T

Concept Applied

Use $B = \mu_0 n I$ for infinite solenoid....

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Question #44

Practice Question

A.0.04 \Omega
B.0.2 \Omega
C.0.5 \Omega
D.2 \Omega

Concept Applied

For a shunt resistor $R_s$, $R_s = \frac{I_g R_g}{I_{max} - I_g}$. Substituting $I_g = 0.01\ \text{A}$, $R_g = 2\ \Omega$, $I_{max}=0.5\ \text{A}$ giv...

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Question #45

Practice Question

A.$ 0.02\ \Omega $
B.$ 0.2\ \Omega $
C.$ 0.1\ \Omega $
D.$ 0.01\ \Omega $

Concept Applied

To convert a galvanometer into an ammeter, a shunt resistance $ R_s $ is connected in parallel. Using the formula $ R_s = \frac{I_g G}{I - I_g} $, whe...

Read Full Step-by-Step Solution →

Question #46

Practice Question

Concept Applied

The force between two parallel currents is given by $F = \frac{\mu_0 I_1 I_2}{2\pi d}$. Substituting the values, we get $F = \frac{4\pi \times 10^{-7}...

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Question #47

Practice Question

A.$\frac{\mu_0 I B}{2r}$
B.$IB\pi r^2$
C.
.$0$

Concept Applied

The net magnetic force on a current-carrying closed loop in a uniform magnetic field is zero. Although individual elements experience forces, they can...

Read Full Step-by-Step Solution →

Question #48

Practice Question

Concept Applied

Using $r = \frac{mv}{qB}$, substitute $m=1.67\times10^{-27}\,\text{kg}$, $v=2.0\times10^{6}\,\text{m/s}$, $q=1.6\times10^{-19}\,\text{C}$, $B=0.5\,\te...

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Question #49

Practice Question

A.2.5 cm
B.0.025 m
C.5 cm
D.0.05 m

Concept Applied

The magnetic force provides the centripetal force: $qvB = mv^{2}/r$. Solving for $r$ gives $r = \frac{mv}{qB} = \frac{2\times10^{-27}\times10^{6}}{1.6...

Read Full Step-by-Step Solution →

Question #50

Practice Question

A.$0.05 \Omega$
B.$0.5 \Omega$
C.$0.005 \Omega$
D.$0.1 \Omega$

Concept Applied

Shunt $S = (G I_g) / (I - I_g)$. Calculation yields approx $0.05 \Omega$....

Read Full Step-by-Step Solution →