A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that
(i) liquid A is a better conductor than liquid B.
(ii) liquid B is a better conductor than liquid A.
(iii) both liquids are equally conducting.
(iv) conducting properties of liquid cannot be compared in this manner.

Explanation

To solve the question, we need to analyze the information given about the two liquids, A and B, based on the behavior of the tester bulb when dipped into each liquid.

### Step-by-Step Solution:

1. **Understanding the Tester**: The tester is used to check the conduction of electricity through the liquids. The brightness of the bulb indicates the amount of electric current flowing through the liquid.

2. **Observation of Liquid A**: When the tester is dipped in liquid A, the bulb glows brightly. This indicates that a large amount of electric current is passing through liquid A, suggesting that it has high conductivity.

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