The resistance of a wire of length Land area of cross-section A is 1.0 Ω . The resistance of a wire of the same material, but of length 41 and area of cross-section 5A will be?
A2.5 Ω
B0.8 Ω
C1.25 Ω
D0.4 Ω
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The magnetic field produced due to a circular coil carrying a current having six turns will be how many times that of the field produced due to a single circular loop carrying the same current?
ഗതിശീലതയുടെ SI യൂണിറ്റ് :
Consider the following statements about magnetic field due to a current-carrying straight conductor: Which of the above statements is/are correct?
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- (b) The direction of the magnetic field lines gets reversed if the direction of the current in the conductor is reversed.
Which of the following can be the graph of the output from a DC generator when its field magnet is rotated ?
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