Online Test of Chapter 13 Magnetic Effects of Electric Current MCQ Class 10th Science

Questions :-

1.The magnetic force experienced by the given conductor will be in which direction according to the figure
(a)Opposite to direction of current flow
(b)Outside paper
(c)Inside Paper
(d)In the direction of current flow

2. The split rings present in the DC electric motor is used to
(a)Rotate motor
(b)Change direction of current in the coil
(c)Keeps direction of current in coil static
(d)Both (b) and (c)

3. The magnetic field lines inside a a long current carrying solenoid is
(a)Circular
(b)Parabolic
(c)Elliptical
(d)Straight

4.Which of the following is true statement?
(a)A electric motor converts electrical energy into mechanical energy
(b)A electric motor converts mechanical energy into electrical
(c)A generator converts electrical energy into mechanical energy
(d)Both (b) and (c)

5. An electric current is obtained in a loop by an bar magnet by
(a)Keeping a bar magnet near loop
(b)Moving the loop across bar magnet
(c)Moving bar magnet across loop
(d)Both (b) and (c)

6. A coil connected to a battery is kept near another coil connected by galvanometer. The switch is closed and current is flowing. The galvanometer is observed. Then the switch is open, again galvanometer is observed. Which of the following is true about both observations?
(a)Galvanometer did not show deflection in first case but shown in second case
(b)Deflection observed in both case in same direction
(c)Deflection occurred in both case and the directions of deflection was opposite in both case
(d)None of the above is true

7.A device converts mechanical energy into a device which generates into electrical energy. The electric current observed in this case keep on changing its direction of flow at constant rate. The device is
(a)DC motor
(b)DC generator
(c)AC generator
(d)Both (b) and (c)

8.A conductor insulated rectangular loop is moved in a magnetic field as shown in the figure. The direction of current obtained is
(a)Inside the paper
(b)A-B-C-D
(c)D-C-B-A
(d)No flow of current

9.No current will be induced in the coil 2 in which of the following case
(a) A constant current is flowing in coil 1
(b)The switch K is made open
(c)The switch K is made closed
(d)In all cases current will be induced

10.Which of the following is false color coding for wires used in our home?
(a)Live wire Red
(b)Earth wire Green
(c)Neutral wire yellow
(d)Both (a) and (b)