Question

a. State ohm's law.
b. On what factors does the resistance of a conductor depend?

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Answer 1

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1. Ohm's law, description of the relationship between current, voltage, and resistance. The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials.
2. ᴛʜᴇ ʀᴇsɪsᴛᴀɴᴄᴇ ᴏғ ᴀ ᴄᴏɴᴅᴜᴄᴛᴏʀ ᴅᴇᴘᴇɴᴅs ᴏɴ ᴛʜᴇ ᴄʀᴏss sᴇᴄᴛɪᴏɴᴀʟ ᴀʀᴇᴀ ᴏғ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛᴏʀ, ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏғ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛᴏʀ, ᴀɴᴅ ɪᴛs ʀᴇsɪsᴛɪᴠɪᴛʏ.

Answer 2

a. Ohm's law states that the current flowing through a conductor is directly proportional to the potential difference applied across its ends.

b. The resistance of a conductor depends on the following factors:

1. Temperature of the wire.

2. Length of the wire.

3. Area of crosse-section of the wire.

4. Material of the wire.

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