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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 21:
In the Fig above, Current I passes through the combination, if the power dissipated in the 5 ohm resistor is 40W, then the power dissipated in the 10 ohm resistor is
  • A 10W
  • B 20W
  • C 40W
  • D 80
  • E 100W
View Answer & Explanation
Question 22:
if the fig above E is an accumulator with negligible internal resistance. and the EMF 9.0V, The the total current is
  • A 0.3A
  • B 0.8A
  • C 1.0A
  • D 1.8A
View Answer & Explanation
Question 23:
A galvanometer of resistance 20\(\Omega\) is to be provided with a shunt that \(\frac{1}{10}\) of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is
  • A 2.00\(\Omega\)
  • B 2.22\(\Omega\)
  • C 18.00\(\Omega\)
  • D 18.22\(\Omega\)
View Answer & Explanation
Question 24:
In the above, a voltage V is applied across the terminals P and Q. The voltage across the 1 ohm resistor is
  • A V/8
  • B V/4
  • C V/3
  • D V/2
View Answer & Explanation
Question 25:
In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 6 ohms,the value of the unknown resistance X is
  • A 1
  • B 2
  • C 3
  • D 4
View Answer & Explanation