Electric Current & Ohm's Law Mock Tests
21 questions available
Electric Current & Ohm's Law Mock Test 1
Questions:
21
नमूना प्रश्न
A wire of resistance R is stretched to double its original length. Its new resistance will be:
A conductor of length L carries a current I. If the diameter of the conductor is doubled, the drift velocity of electrons will:
Kirchhoff's junction rule (current rule) is based on the principle of conservation of:
A conductor of length L and cross-sectional area A has a potential difference V applied across it. If the length is doubled and the area is halved by stretching, the drift velocity of electrons will:
The resistance of a metallic conductor increases with increase in temperature because:
A wire of resistance R is cut into five equal parts. These parts are now connected in parallel. The equivalent resistance of the combination is:
A wire of resistance R is stretched to double its original length. If the original resistivity was ρ, the new resistance is:
A copper wire of resistance R is stretched so that its length increases by 50%. The new resistance will be approximately:
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