Science, asked by nicolekirstenco, 23 hours ago

2. Three resistors R1 = 30 Ω, R2 =160 Ω, and R3 = 40 Ω are connected in series across a generator. A voltmeter connected across R2 reads 85 V, what is the voltage of the generator?

Answers

Answered by amitnrw
6

Given :   Three resistors R1 = 30 Ω, R2 =160 Ω, and R3 = 40 Ω are connected in series across a generator.

A voltmeter connected across R2 reads 85 V,  

To Find :  the voltage of the generator

Solution:

resistors R1 = 30 Ω, R2 =160 Ω, and R3 = 40 Ω are connected in series

Hence total Resistance = 30 + 160 + 40  = 230 Ω

Current in Series will be same  = I

Voltage = Current * Resistance

V = IR

Voltage across  R2 reads 85 V

=> 85  = I ( 160)

=> I = 85/160

=> I = 17/32  A

Voltage of generator  = Current * Total Resistance

 =  I * 230

= (17/32) * 230

= 122.1875 V

voltage of the generator = 122.1875 V

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