Parallel Combination in Circuits

Q. Statement I: In a parallel circuit, the electricity has more than one path to flow through.
Statement II: Bulbs in two circuits- one having single cell and another having two cells connected parallelly- will glow with the same brightness.

1. Statement I is incorrect and statement II is correct.
2. Statement I is correct and statement II is incorrect.
3. Both statement I and statement II are incorrect.
4. Both statement I and statement II are correct.

Q. Which of the following bulbs connected in parallel consumes more power with the wattages given?

1. 4 bulbs of 60 W each.
2. 5 bulbs of 40 W each
3. 3 bulbs of 50 W each
4. 7 bulbs of 25 W each

Q. Two identical heaters, each marked 1000 watt, 250 volt are placed in parallel with each other and connected to a 250 volt supply. The net rate of heat will be (combine by both):

1. 250W
2. 500W
3. 1000W
4. 2000W

Q.

An electric bulb of rating $\text{50W}$ is used for $\text{8hr}$ in one day. Find the number of units $\left(kWh\right)$ of energy used by the electric bulb.

1. 200 unit

2. 0.4 unit

3. 0.6 unit

4. 400 unit

Q. In an household electric circuit, which of the following is/are correct?
(A) All electric appliances drawing power are joined in parallel.
(B) A switch may be either in series or in parallel with the appliance which it controls.
(C) If a switch is in parallel with an appliance, it will draw power when the switch is in the 'off' position (open).
(D) If a switch is in parallel with an appliance, the fuse will blow (burn out) when the switch is put 'on' closed.

1. A, D
2. A, C, D
3. B, C, D
4. A, B, D

Q. Three bulbs P, Q and R are connected in a circuit as shown. At least one of the bulbs will glow if:

1. Only P is fused
2. P and R, both are fused
3. Only R is fused
4. Q and R, both are fused