Three bulbs,each having a resistance of `180(Omega)`are connected in parallel to an ideal battery of emf60V. Find the current delivered by the battery when (a)all the bulbs are switched on,(b)two of the bulbs are switched on and (c )only one bulb is switched on.

Explanation

To solve the problem step by step, we will analyze the current delivered by the battery under different conditions of the bulbs being switched on.

### Given:
- Resistance of each bulb, \( R = 180 \, \Omega \)
- EMF of the battery, \( E = 60 \, V \)

### (a) All bulbs are switched on:
1. **Determine the equivalent resistance when all three bulbs are connected in parallel**:
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