Current Electricity | Practice MCQs Physics for Mdcat | mosaicbro.com

Current Electricity | Practice MCQs Physics for Mdcat

7 of 85 questions (Page 8 of 13)

Filter by Category

50 In a house circuit, all electrical appliances are connected in parallel to each other between the line and neutral wires to get:
Correct Answer: C
Explanation: Parallel connection ensures same voltage (V) but different currents (I) per appliance.
51 When resistors are connected in parallel, the equivalent resistance is always:
Correct Answer: C
Explanation: Parallel $R_e$ is less than the smallest resistor in the group.
52 Three resistors of resistance 2, 3, and 6 Ohms are connected in parallel, their equivalent resistance is:
Correct Answer: B
Explanation: $\frac{1}{R_e} = \frac{1}{2} + \frac{1}{3} + \frac{1}{6} = 1 \implies R_e = 1Ω$.
53 Three resistors of resistance 2, 3, and 6 Ohms are connected in series, their equivalent resistance will be:
Correct Answer: D
Explanation: $R_e = 2 + 3 + 6 = 11Ω$.
54 As the charge flows through the conductor energy is dissipated in the form of:
Correct Answer: A
Explanation: Joule heating ($I^2R$) converts electrical energy to heat.
55 Power dissipated as heat in the conductor of resistance ‘R’ due to electric current ‘I’ is given by:
Correct Answer: B
Explanation: Power dissipated as heat is $P = I^2R$.
56 Power dissipated in the form of ‘V’ and ‘I’ can be defined as:
Correct Answer: A
Explanation: Power is also given by $P = VI$.
MCQs Bank by mosaicbro.com