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G10 Physical Sciences 2025-01

G10 Physical Sciences 2025-01

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The partial or complete polar separation of positive and negative electric charge in a system is called relativity

Two spheres are hanging next to each other on light strings. Describe the force experienced by sphere A.

No force

Away from sphere B

Towards sphere B

There is no way to tell

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A charged object has a net charge of -9,6 x 10^-18C. Calculate the number of excess electrons or protons in the object. Remember the charge on an electron is -1,6 x 10^-19 C.

A charged object has a net charge of +2,08 x 10^-18 C. Calculate the number of excess electrons or protons in the object. Remember the charge on an electron is -1,6 x 10^-19 C.

Two identical spheres are on insulating stands. Sphere A has a charge of -8 x 10^-18 C and sphere B has an excess of 60 protons. The two spheres are brought into contact and separated again. Calculate the charge on sphere B after the spheres have been separated again.

-5 x 10^-18 C

1,6 x 10^-18 C

❌

8 x 10^-19 C

-1,6 x 10^-18C

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The triboelectric series is given below.

An amber rod is charged by rubbing it with rabbit fur. What will be the net charge on the rabbit fur after charging?

Positive

Neutral

Either, we need more information

Negative

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Two identical metal spheres on insulating stands have different charges. Sphere A has a charge of +8 nC and sphere B has a charge of -12 nC. The spheres are brought into contact and separated again. Calculate the charge on sphere B after separating the spheres.

+20 nC

-20 nC

+2 nC

-2 nC

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Magnetic fields run from the south to north outside the magnet.

What will happen when an iron magnet is broken in two equal pieces?

The two pieces will repel each other because there are like poles on the inside.