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G10 Physical Sciences 2025-01

G10 Physical Sciences 2025-01

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

True

False

100%

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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.

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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.

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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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We know that the opposite poles of magnets are attracted to each other. The red needle of a compass always points to:

Both magnetic and geographic north as the one is essentially right next to the other.

❌

Magnetic south because the north pole of the compass must point to south.

❌

Magnetic north, although this is actually the south pole of the Earth’s magnetic field.

✅