Capacitors - Jamb Physics Past Questions and Answers

Question 21:

• JAMB 2001

The diagram above shows two capacitors P and Q of capacitance 2μF and 4μF respectively connected to a d.c source. The ratio of energy stored in P to Q is

A. 4:1
B. 2:1
C. 1:4
D. 1:2

Question 22:

• JAMB 2001

The diagram above shows the capacitors C₁, C₂ and C₃ 2μF, 6μF and 3μF respectively. The potential difference across C₁, C₂ and C₃ respectively are

A. 4V, 6V and 2V
B. 2V, 6V and 4V
C. 6V, 4V and 2V
D. 6V, 2V and 4V

Question 23:

• JAMB 2002

The energy stored in a capacitor of capacitance 10μF carrying a charge of 100μC

A. 5 x 10⁴ J
B. 4 x 10² J
C. 4 x 10^-3 J
D. 5 x 10^-4 J

Question 24:

• JAMB 2004

Given three capacitors 0.3μF, 0.5μF and 0.2μF, the joint capacitance when arranged to give minimum capacitance is

A. 0.1μF
B. 0.3μF
C. 1.0μF
D. 0.5μF

Question 25:

• JAMB 2005

The figure above shows three capacitors, 2μF, 3μF and 6μF connected in series. If the p.d across the system is 12V, the p.d, across the 6μF capacitor is

A. 4V
B. 12V
C. 2V
D. 6V