MCQ
Which resistor is difficult to make of having a value less than about 2 Ohms?
- AIron Resistor
- BCarbon Resistor
- CWire wound Resistor
- DBoth b and c
Explanation:
Carbon resistor is difficult to make of having a value less than about 20 Ohms because they have ability to withstand high energy pulses, when current flow through the carbon composition body conducts the energy. So carbon resistor can be made with a higher resistance.
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Which curve may best represent the current deflection in a tangent galvanometer
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(a) A |
(b) B |
(c) C |
(d) D |
When the P end of P-N junction is connected to the negative terminal of the battery and the N end to the positive terminal of the battery, then the P-N junction behaves like
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(a) A conductor |
(b) An insulator |
(c) A super-conductor |
(d) A semi-conductor |