MCQ Questions for Class 7 Science Chapter 14 : NCERT solutions for Class 7 Science MCQs Chapter 14 “Electric Current and Its Effects” with Answers PDF Free Download prepared here according to the latest CBSE syllabus and NCERT curriculum. Class 7 Science MCQs Multiple Choice Questions for all Chapter.
MCQ Questions for Class 7 Science Chapter 14 Electric Current and Its Effects with answer pdf
Q1. Electromagnet loses its magnetic property when
(a) Current is very high
(b) Current is switched OFF
(c) Heat is increased
(d) Current is switched ON
Answer: (b) Current is switched OFF
Q2. Which of the devices use a battery?
(a) Torch
(b) Transistor
(c) TV remote control
(d) All of these
Answer: (d) All of these
Q3. In making a battery
(a) positive terminal of one cell is connected to the negative terminal of the next cell
(b) positive terminal of one cell is connected to the positive terminal of the next cell
(c) negative terminal of one cell is connected to the negative terminal of the next cell
(d) none of the above
Answer: (a) positive terminal of one cell is connected to the negative terminal of the next cell
Q4. Bulbs, wires, cells and switches are known as the of a circuit.
(a) element
(b) switch
(c) filament
(d) none of these
Answer: (a) element
Q5. A __ is used in torches.
(a) Generator
(b) Fuse
(c) Secondary cell
(d) Dry cell
Answer: (d) Dry cell
Q6. Arrangement of cells in a device is
(a) side by side
(b) one after the other
(c) (a) or (b)
(d) none of these
Answer: (c) (a) or (b)
Q7. Where can the key or switch be placed in the circuit?
(a) Left side of the battery
(b) Right side of the battery
(c) Can be placed anywhere in the circuit
(d) Near the positive terminal of the bulb
Answer: (c) Can be placed anywhere in the circuit
Q8. An element measure the flowing an electric current is:
(a) voltmeter
(b) filament
(c) circuit
(d) ammeter
Answer: (d) ammeter
Q9. Electromagnet is used in
(a) Battery
(b) Dry cell
(c) Electric bell
(d) Fuse
Answer: (c) Electric bell
Q10. In an electric circuit, the bulb glows only when the switch is in the
(a) ‘ON’ position
(b) ‘OFF’ position
(c) (a) or (b)
(d) none of these
Answer: (a) ‘ON’ position
Q11. Which one of the following is based on the heating effect of current?
(a) Geyser
(b) Hair dryer
(c) Immersion rod
(d) All of these
Answer: (d) All of these
Q12. An element measure the potential difference between two points in an electric circuit is:
(a) voltmeter
(b) filament
(c) circuit
(d) ammeter
Answer: (a) voltmeter
Q13. A device which prevents or allows the current to flow through it
(a) Motor
(b) Terminal
(c) Conductor
(d) Switch
Answer: (d) Switch
Q14. When the switch is in the ‘ON’ position, the electric circuit is said to be
(a) closed
(b) open
(c) complete
(d) both (a) and (c)
Answer: (d) both (a) and (c)
Q15. The coil of wire contained in an electric heater is known as
(a) component
(b) element
(c) circuit
(d) spring
Answer: (b) element
Q16. Electric current has energy called:
(a) voltmeter
(b) filament
(c) electrical energy
(d) none of these
Answer: (c) electrical energy
Q17. The metal which is poor conductor of electricity is
(a) Gold
(b) Iron
(c) Aluminium
(d) Mercury
Answer: (d) Mercury
Q18. Which of the following precaution need not be taken while using electric appliances?
(a) Never touch lighted electric bulb connected to mains.
(b) Never experiment with the electric supply from mains.
(c) Never use any wire to replace fuse wire.
(d) Never turn switch in ‘ON’ position.
Answer: (d) Never turn switch in ‘ON’ position.
Q19. The amount of heat produced in a wire depends on
(a) material
(b) length
(c) thickness
(d) all of these
Answer: (d) all of these
Q20. The magnetic material around the coil is wound is called:
(a) magnetic substance
(b) core
(c) soft iron
(d) none
Answer: (b) core
