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Sunday, 21 June 2026
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Physics Past Questions and Answers

Topic: Current Electricity

Jamb Physics Questions - Current Electricity

Question 41:
Which of the following is required to convert a milliammeter to an ammeter?
  • A A high resistance in parallel
  • B A high resistance in series
  • C A low resistance in parallel
  • D A low resistance in series
View Answer & Explanation
Question 42:
An alternating source is connected in series to a capacitor of capacity reactance \( 10^3 \sqrt{3} \) and a resistor of resistance 103 Ohms. The Impedance of the circuit is...
  • A \( 2000 \sqrt{3} \) Ohms
  • B 2000 Ohms
  • C \( 1000 \sqrt{3} \) Ohms
  • D 1000 Ohms
View Answer & Explanation
Question 43:
A galvanometer of internal resistance 50\(\Omega\) has a full scale deflection for a current of 5mA. What is the resistance required to covert it to a voltmeter with full scale deflection of 10V?
  • A 1750\(\Omega\)
  • B 1950\(\Omega\)
  • C 2000\(\Omega\)
  • D 2500\(\Omega\)
View Answer & Explanation
Question 44:
If 8 x 10\(^{-2}\) J of work is required to move 100\(\mu\)C of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y is
  • A 4.0 x 10<sup style='font-size: smaller;'>2</sup> v
  • B 4.0 x 10<sup style='font-size: smaller;'>4</sup> v
  • C 8.0 x 10<sup style='font-size: smaller;'>2</sup> v
  • D 8.0 x 10<sup style='font-size: smaller;'>-2</sup> v
View Answer & Explanation
Question 45:
In a meter bridge experiment, two resistor 2\(\Omega\) and 3\(\Omega\) occupy the left and right gaps respectively. Find the balance point from the left side of the bridge
  • A 20cm
  • B 40cm
  • C 60cm
  • D 80cm
View Answer & Explanation