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In the given circuit, V1 = 40 V when R is 10 Ω . When R is zero, the value of V2 will be
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- 40 V
- 30 V
- 20 V
- 10 V
Correct Option: A
Applying KCL at node (1), we have
| + | + | = 0 | ||||
| 10 | 20 | R |
| ⇒ |  | + | + |  | = | ||||
| 10 | 20 | R | R |
| ⇒ V2 = | | + | | R + V2 | ||
| 10 | 20 |
R = 0 gives, V2 = V1
| Also , | + | = 0 | ||
| 10 | 20 |
⇒ V1 = 40 volts
∴ V2 = 0 V
