Figure 13 shows a negatively charged metal sphere, M - Edexcel - GCSE Physics - Question 7 - 2021 - Paper 1
Question 7
Figure 13 shows a negatively charged metal sphere, M.
(i) Sphere M is negatively charged because it has
A. gained electrons
B. lost electrons
C. gained protons
D. l... show full transcript
Worked Solution & Example Answer:Figure 13 shows a negatively charged metal sphere, M - Edexcel - GCSE Physics - Question 7 - 2021 - Paper 1
Step 1
Sphere M is negatively charged because it has
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Answer
Sphere M is negatively charged because it has gained electrons.
Step 2
Describe what happens in the wire connecting sphere N to earth when the spark jumps between M and N.
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Answer
When the spark jumps between spheres M and N, electrons move through the wire from earth to sphere N to neutralize the charge, allowing electron flow down the wire.
Step 3
Describe a use of earthing in everyday life.
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Answer
One use of earthing is in electrical devices, such as kettles. If there is a fault, the charge is directed into the ground, preventing electric shock to the user.
Step 4
Draw on Figure 15 the shape and direction of the electric field between the plates.
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Answer
The electric field lines between the positive and negative plates are straight, parallel lines that point from the positively charged plate to the negatively charged plate.
