1. Heat transfer by conduction is dependent upon, (a) particles being able to ca

Question

1. Heat transfer by conduction is dependent upon, (a) particles being able to carry the heat to a cooler environment, (b) infrared waves transporting the energy, (c) the conductivity of objects in contact with each other, (d) objects being at the same temperature

2. Surrounding a conducting wire which is carrying current there is, (a) a permanent magnetic field, (b) a temporary magnetic field, (c) no magnetic field, (d) more than one magnetic field

3. If a length of conducting wire is suspended within a magnetic field and current flows through the wire, the wire: (a) moves out of the magnetic field, (b) rotates, (c) generates a current, (d) is attracted to the magnets

4. Surrounding a wire which is carrying alternating current is a: (a) permanent magnetic field which is parallel to the wire, (b) changing magnetic field which is parallel to the wire, (c) permanent magnetic field which is perpendicular to the wire, (d) changing magnetic field which is perpendicular to the wire

5. A transformer consists of two separate coils: when alternating current flows in the primary coil with a greater number of turns than the secondary coil a, _____________, ___________current/voltage is induced in the secondary coil. (a) greater, direct, (b) greater, alternating, (c) smaller, direct, (d) smaller, alternating

Explanation / Answer

Answers

1. C) conductivity of objects in contact with each other

2. B) a temporary magnetic field

3. B) rotates

4. D)changing magnetic field which is perpendicular to the wire.

5. D) smaller, alternating

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