Advertisements
Advertisements
Question
Which of the following is correct?
Options
Rate of change of charge is electrical power.
Rate of change of charge is current.
Rate of change of energy is current.
Rate of change of current is charge.
Advertisements
Solution
Rate of change of charge is current.
APPEARS IN
RELATED QUESTIONS
Give two reasons why nichrome alloy is used for making the heating elements of electrical appliances.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
Which of the following characteristic is not suitable for a fuse wire?
(a) thin and short
(b) thick and short
(c) low melting point
(d) higher resistance than rest of wiring
Name the factors on which the heat produced in a wire depends when current is passed in it, and state how does it depend on the factors stated by you.
What does overloading cause?
True or False – If False give the correct answer
The fuse wire does not melts whenever there is overload in the wiring.
Explain the heating effect of electric current.
Name any two appliances which work under the principle of heating effect of current.
(a) Observe the diagram given below and state whether the bulb will glow or not when we switch on K.

(b) Is it safe to handle the bulb when the switch is OFF?
(c) Give a reason for your answer in (b).
What are the factors affecting heating effect of electric current?
