Physics - Electricity Questions for SSC CGL

Question 1

A 12 V battery is connected across a 4 Ω resistor. The current flowing is:

Accepted Answer

3 A

Answer

48 A

Answer

16 A

Answer

0.33 A

Question 2

According to Ohm's law, at constant temperature the current through a conductor is:

Accepted Answer

Directly proportional to the potential difference

Answer

Inversely proportional to the potential difference

Answer

Independent of the potential difference

Answer

Proportional to the square of the potential difference

Question 3

Three resistors of 2 Ω, 3 Ω and 5 Ω are connected in series. The equivalent resistance is:

Accepted Answer

10 Ω

Answer

1 Ω

Answer

0.97 Ω

Answer

30 Ω

Question 4

Household electrical appliances in India are connected in:

Accepted Answer

Parallel

Answer

A single loop with the meter

Answer

Alternate series and parallel

Answer

Series

Question 5

The filament of an incandescent electric bulb is made of:

Accepted Answer

Tungsten

Answer

Copper

Answer

Iron

Answer

Nichrome

Question 6

An electric fuse works on the principle of the:

Accepted Answer

Heating effect of current

Answer

Chemical effect of current

Answer

Photoelectric effect

Answer

Magnetic effect of current

Question 7

An electric heater draws 5 A from a 220 V supply. Its power is:

Accepted Answer

1100 W

Answer

44 W

Answer

215 W

Answer

225 W

Question 8

Two 6 Ω resistors are connected in parallel. Their equivalent resistance is:

Accepted Answer

3 Ω

Answer

36 Ω

Answer

6 Ω

Answer

12 Ω

Question 9

A 100 W bulb is used for 10 hours. The electrical energy consumed is:

Accepted Answer

1 kWh

Answer

1000 kWh

Answer

0.1 kWh

Answer

10 kWh

Question 10

The domestic AC supply in India has a frequency of:

Accepted Answer

50 Hz

Answer

220 Hz

Answer

100 Hz

Answer

60 Hz

Question 11

The element of an electric heater is usually made of:

Accepted Answer

Nichrome

Answer

Aluminium

Answer

Copper

Answer

Tungsten

Question 12

The heat produced in a resistor is given by H = I²Rt. If the current is doubled, the heat produced becomes:

Accepted Answer

Four times

Answer

Twice

Answer

Unchanged

Answer

Half

Question 13

A charge of 60 C flows through a wire in 2 minutes. The current is:

Accepted Answer

0.5 A

Answer

120 A

Answer

2 A

Answer

30 A

Question 14

The potential difference across a circuit is measured using a:

Accepted Answer

Voltmeter connected in parallel

Answer

Galvanometer connected in series only

Answer

Voltmeter connected in series

Answer

Ammeter connected in parallel

Question 15

A wire of resistance 10 Ω is stretched to double its length (volume constant). Its new resistance is:

Accepted Answer

40 Ω

Answer

10 Ω

Answer

20 Ω

Answer

5 Ω

Physics - Electricity Questions for SSC CGL (with Answers)

Q1. A 12 V battery is connected across a 4 Ω resistor. The current flowing is:

Q2. According to Ohm's law, at constant temperature the current through a conductor is:

Q3. Three resistors of 2 Ω, 3 Ω and 5 Ω are connected in series. The equivalent resistance is:

Q4. Household electrical appliances in India are connected in:

Q5. The filament of an incandescent electric bulb is made of:

Q6. An electric fuse works on the principle of the:

Q7. An electric heater draws 5 A from a 220 V supply. Its power is:

Q8. Two 6 Ω resistors are connected in parallel. Their equivalent resistance is:

Q9. A 100 W bulb is used for 10 hours. The electrical energy consumed is:

Q10. The domestic AC supply in India has a frequency of:

Q11. The element of an electric heater is usually made of:

Q12. The heat produced in a resistor is given by H = I²Rt. If the current is doubled, the heat produced becomes:

Q13. A charge of 60 C flows through a wire in 2 minutes. The current is:

Q14. The potential difference across a circuit is measured using a:

Q15. A wire of resistance 10 Ω is stretched to double its length (volume constant). Its new resistance is:

More General Awareness topics