Advertisements
Advertisements
Question
Advertisements
Solution
APPEARS IN
RELATED QUESTIONS
1 kWh = ________ J
Explain why, filament type electric bulbs are not power efficient.
Electrical power P is given by the expression P = (Q × V) ÷ time. What do the symbols Q and V represent?
The diagram shows a coil connected to a center zero galvanometerG . The galvanometer shows a deflect ion to the right when the north pole N of a powerful magnet is moved to the right as shown .
(i) Explain, why the defelct ion occurs in the galvanometer.
(ii ) State whether th e current in the coil is cl ockwise or anticl ockwise
when viewed from the end P.
(iii ) State th e observation in G when the coil is moved away from north
pole N of the magnet keeping the magnet stationary.
(iv)State the observation in G when both the coil and the magnet are
moved to right at th e same speed .
Express watt hour and kilowatt hour in joule.
Why does not the heating coil produce any visible light? in an electric stove.
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the resistance of the bulb.
Electric power is inversely proportional to ____________.
The electrical power and current in the circuit relates by ______
