Introduction to Electric Circuits 1st. Edition by Ray Powell | 9780340631980 | 340631988 | Holooly

Electric Circuits

Introduction to Electric Circuits

130 SOLVED PROBLEMS

Question: 2.5

A copper rod, 20 cm long and 0.75 cm in diameter, has a resistance of 80 μΩ. Calculate the resistance of 100 m of wire, 0.2 mm in diameter drawn out from this rod. ...

Verified Answer:

From Equation (2.4), the resistance of the rod is ...

Question: 7.14

Determine the currents supplied by the voltage sources Vs1 and Vs2 in the circuit of Fig. 7.11. ...

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There are three meshes identified by the currents ...

Question: 7.15

Determine the current through the resistor R2 in the circuit of Fig. 7.12. ...

Verified Answer:

There are two meshes whose currents are

I_{...

Question: 7.16

Determine (1) the mesh current I2 and (2) the voltage at node X in the circuit of Fig. 7.14. ...

Verified Answer:

There are three meshes in total but since there is...

Question: 1.5

The force between two charges q1 and q2 separated by a distance d in a vacuum is given by F = q1q2/4πε0 d², where ε0 is a constant whose dimensions are [M L^-3 T^4 A²]. Check the dimensional balance of this equation. ...

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The left-hand side of the equation is simply the f...

Question: 1.1

Obtain the dimensions of (1) acceleration, (2) force, (3) torque. ...

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Acceleration is the rate of change of velocity, so...

Question: 1.6

The energy in joules stored in a capacitor is given by the expression (C^aV^b)/2, where C is the capacitance of the capacitor in farads and V is the potential difference in volts maintained across its plates. Use dimensional analysis to determine the values of a and b. ...

Verified Answer:

We have that

W= (C^{a}V^{b})/2

In d...

Question: 1.4

Obtain the dimensions of (1) resistance, (2) inductance, (3) capacitance. ...

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1 Resistance is electric potential difference divi...

Question: 1.3

Find the dimensions of (1) electric charge, (2) electric potential difference. ...

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1 Electric charge is electric current multiplied ...

Question: 1.10

Express (1) 10 mV in MV, (2) 5 km in mm, (3) 0.1 IμF in pF, (4) 50 MW in GW. ...

Verified Answer:

1 To convert from millivolts to volts we multiply...

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