2) Consider the circuit below consisting of two nichrome wires in series. a) If

Question

2) Consider the circuit below consisting of two nichrome wires in series. a) If the battery voltage is I.5V, determine the voltage across each of the nichrome wires. Explain. h.) If the 30cm wire were replaced by a 40cm vice determine the voltage across each of the nichrome wires. Explain. C) Return to the original circuit. If the 20 cm wire were replaced by 40 cm wire. determine the voltage across each of the nichrome wires. Explain. 3) Consider the circuit below. a) If the battery voltage is I .5V, determine the voltage across each of the nichrome wires. b) If a 30cm length of nichrome wire were added the circuit as in the diagram below. would the voltage across resister A increase, decrease, or remain the same? Explain. (ii) would the voltage across resister B increase, decrease, or remain the same? Explain.

Explanation / Answer

two nichromes are connected in series

means current flowing through circuit is same

a)

h)

resistance is directly propotional to length of wire

assume that resistance of nichrome is 30 ohms

voltage across each nichrome will be

V1=0.75volts

V2=0.75volts

resistance is replaced by 40cm wire

resistance is directly propotional to length of wire

in this case resistance is more

but voltage across each nichrome is same

c)

considering 20cm

resistance of 20cm wire <resistance of 40cm wire

even though they have same voltage

3)

actually diagram is not shown in question

it is impossible to solve

but procedure is same

RESISTANCE IS DIRECTLY PROPOTIONAL TO LENGTH OF GIVEN WIRE

MORE LENGTH MORE RESISTANCE

VOLTAGE DISTRIBUTION REMAINS SAME IF TWO WIRE CONTAINS SAME LENGTH

VOLTAGE VARIES AS LENGTH OF PARTICULAR TYPE WIRE LENGTH CHANGES

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