please help
please answer questions 2 to 5
fastttt
Answers
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❥ GIVEN :
1) what happens to the resistance of a conductor when its area of cross section is increased ?
❥ ANSWER :
• On increasing the area of cross-section, resistance decreases. This is because resistance is inversely proportional to area.
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❥ GIVEN :
2) What is meant by electrical circuit? A 9 A resistance is cut in to three equal parts and connected in parallel, Find the equivalent resistance of the combination?
❥ ANSWER :
When the resistance is cut into three equal parts, then new resistance, i.e. R = 9/3 = 3 Ohm. Thus, equivalent resistance = 3 ohm.
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❥ GIVEN :
3) Draw a circuit diagram consisting of a buttery of two cells of 2 volts each, a 25 a resistor, a Ω 46 resistor, a 612 resistor and a plug key, all connected in series
❥ ANSWER :
pls refer the pic at the first !!!
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❥ GIVEN :
4) What is likely to happen if the positions of ammeter and voltmeter are interchanged in a circuit?
❥ ANSWER :
The voltmeter is a high resistance device used to measure voltage across two point and it is always connected in parallel with the the circuit. If the positions of these two are interchanged, the ammeter will be destroyed by high amount of current given that it is of low resistance.
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❥ GIVEN :
5) 100J of work is done in transferring 200 of charge between two points in a conductor. Find the resistance offered by the conductor, if a current of 2A flows through it.
❥ ANSWER :
refer the second pic !!!
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