An electronic circuit has two 18-k? resistors, R 1 and R 2, connected in series

Question

An electronic circuit has two 18-k? resistors, R1 andR2, connected in series as shown in (Figure 1) . The battery voltage is 10V and it has negligible internal resistance. A voltmeter is connected across R1, as shown in (Figure 2) .

Part A

What internal resistance should the voltmeter have to be in error by less than 5{ m %} ?

An electronic circuit has two 18-k? resistors, R1 andR2, connected in series as shown in (Figure 1) . The battery voltage is 10V and it has negligible internal resistance. A voltmeter is connected across R1, as shown in (Figure 2) . Part A What internal resistance should the voltmeter have to be in error by less than 5{rm %} ? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

V=IR

I=10/(36*103)

5 % of 10=0.5

0.5=Ir

r=0.5*3600 ohms

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