Normal type of MCQ with one correct option
Find the resistance between a and b in the circuit given below.
3 (
6 (
9 (
12 (.
Normal type of MCQ with one correct option
The supply voltage to a room is 120 V. The resistance of the lead wires is 6 ohm. A 60 watt bulb is already giving light. What is the decrease in voltage across the bulb when a 240 watt heater is switched on?
Zero volt
2.9 volt
13.3 volt
10.4 volt.
Normal type of MCQ with one correct optionA wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be:
nR
Normal type of MCQ with one correct option An n(type silicon slab has length 6 ( 10(2 m, width 4 ( 10(3 m and thickness 25 ( 10(5 m. It carries a current of 4.8 mA. If free electron density is 1022 m(3, then time taken by the free electron to travel full length of the slab will be
0.01 s
0.02 s
0.03 s
0.04 s.
In this, there may be more than one option correct
The resistivity of a conductor in the form of a wire depends on its
(a)Length (b)Diameter
(c)Material (d)Temperature.
A,B
B, C
C,D
A,B & D
/
Current through R3 = 2.5 A
Current through R4 = 3 A
Both (a) and (b) are correct
Both increases and (b) are wrong.
/
2 A
2.5 A
3.5 A
Zero.
/
2 A
3 A
1 A
2.5 A.
/
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true