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प्रश्न
Name two electric devices for each where
- heating effect of current is used and
- magnetic effect of current is used.
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उत्तर
- Current heating devices are used room heaters and geysers.
- Cranes and electric bells employ the magnetic influence of current.
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संबंधित प्रश्न
An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.
Derive the expression for the heat produced due to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is this relation known?
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
Which of the following substance contracts on heating?
Find the odd one out and give its explanation.
Heating effect of current is called ______
(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).
Find the odd one out.
What is the heating effect of electric current?
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
