# Answer to Question #55898 in Electromagnetism for kola

Question #55898

6 Calculate the currents in $3\Omega$ resistor

0.36A

2.54A

1.42A

3.46A

7 Calculate the currents in the circuit

1.94A

1.36A

3.23A

5.45A

8 Electrical energy is sold by PHCN in units of kilowatt-hour (kWh). The lighting of a house is done with five 60W bulbs which are swithed on for approximately three hours per day. What is the lighting bill for the household over a period of 30days at the rate of N1.20 per kilowatt-hour?

N1.50

N25.30

N32.40

N52.20

9 A battery has emf 13.2V and internal resistance $24m\Omega$. If the load current is 20.0A, find the terminal voltage o f the battery

12.7V

14.5V

16.8V

17.7V

10 A cirrent flows in a wire of circular cross-section with the free electrons travelling with a mean drift velocity v. If an equal current flows in a wire of the same material but of twice theradius, what is the new mean drift velocity?

v/4

v/2

2v

4v

0.36A

2.54A

1.42A

3.46A

7 Calculate the currents in the circuit

1.94A

1.36A

3.23A

5.45A

8 Electrical energy is sold by PHCN in units of kilowatt-hour (kWh). The lighting of a house is done with five 60W bulbs which are swithed on for approximately three hours per day. What is the lighting bill for the household over a period of 30days at the rate of N1.20 per kilowatt-hour?

N1.50

N25.30

N32.40

N52.20

9 A battery has emf 13.2V and internal resistance $24m\Omega$. If the load current is 20.0A, find the terminal voltage o f the battery

12.7V

14.5V

16.8V

17.7V

10 A cirrent flows in a wire of circular cross-section with the free electrons travelling with a mean drift velocity v. If an equal current flows in a wire of the same material but of twice theradius, what is the new mean drift velocity?

v/4

v/2

2v

4v

Expert's answer

8 Electrical energy is sold by PHCN in units of kilowatt-hour (kWh). The lighting of a house is done with five 60W bulbs which are swithed on for approximately three hours per day. What is the lighting bill for the household over a period of 30days at the rate of N1.20 per kilowatt-hour?

The answer is:

N32.40

9 A battery has emf 13.2V and internal resistance $24m\Omega$. If the load current is 20.0A, find the terminal voltage o f the battery

The answer is:

12.7V

10 A cirrent flows in a wire of circular cross-section with the free electrons travelling with a mean drift velocity v. If an equal current flows in a wire of the same material but of twice theradius, what is the new mean drift velocity?

The answer is:

v/4

The answer is:

N32.40

9 A battery has emf 13.2V and internal resistance $24m\Omega$. If the load current is 20.0A, find the terminal voltage o f the battery

The answer is:

12.7V

10 A cirrent flows in a wire of circular cross-section with the free electrons travelling with a mean drift velocity v. If an equal current flows in a wire of the same material but of twice theradius, what is the new mean drift velocity?

The answer is:

v/4

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