Advertisements
Advertisements
प्रश्न
Write SI unit of
Electric current,
Advertisements
उत्तर
S. I unit of electric current is Ampere
APPEARS IN
संबंधित प्रश्न
Name one D.C. source and one A.C. source.
State the two kinds of cell. Give one example of each.
State whether the resistance of filament of a bulb will decrease, remain unchanged or increase when it glows.
A charge of 8860 C flows through an electric circuit in 2 min and 40 s. Calculate the magnitude of current in a 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
Resistance.
'The resistance of a wire is 2 ohm'. Explain the meaning of this statement.
State three factors on which the resistance of a wire depends. Explain, how does the resistance depend on the factors stated by you.
