Advertisements
Advertisements
प्रश्न
Name the instrument used to control the current in an electric circuit.
Advertisements
उत्तर १
A rheostat is used to control current in an electric circuit.
उत्तर २
संबंधित प्रश्न
When starter motor of a car is switched on for 0.8 s . a charge 24 C passes through the coil of the motor . Calculate the current in the coil .
Explain the concept of electric potential difference in terms of work done in transferring the charge.
What do you understand by the term electric potential?
What do you understand by the term parallel circuit?
The following figure shows a metal rod PQ mounted on an insulated stand. The cap of an uncharged electroscope touches one end Q of the metal rod. A negatively charged ebonite rod is brought near the other end P of the metal rod.
(a) What charge does the end P have?
(b) What charge does the end Q have?
(c) What charge does the cap of the electroscope have?
(d) What charge does the gold leaf have?
(e) Will the leaf diverge or collapse? Give reason.
(f) If the electroscope is now earthed, what charge does the metal rod have?
Write SI unit of
Potential difference
