Question

DATA

Current (mA)	Galvanometer Deflection
150	3
175	4
200	5.4
225	7
250	8.5

Make graph with this data for step 9.

Analysis Questions

Part 1

Q1. Does the galvanometer deflect to the left or the right when

a)   the magnet is being pushed in

b)   the magnet is being pulled out

c)   the magnet is being held steady?

Q2. How does the maximum deflection of the galvanometer appear to depend on the speed with which the magnet is moved? Why?

Q3. How do your observations lend support to the statement: "A steady magnetic field cannot induce currents in a stationary conductor"?

Part 2)

Q4. Does the galvanometer deflect to the left or right while the current in the smaller coil is

a)   increasing

b) decreasing

c) not changing

Q5. State, giving reasons, whether the answers given to Q.4. are to be expected on the basis of those given in Q.1.

Q6. What is the effect of the presence of the rod on the current induced in the larger
solenoid?

Q7. How does the induced current depend on the rate at which the current in the smaller
solenoid is altered?

Q8. What does the graph indicate?

Part 3

Q9. Are your results consistent with Lenz' s Law?

Answer 1

Q1. Does the galvanometer deflect to the left or the right when

a)   the magnet is being pushed in - Left

b)   the magnet is being pulled out - right

c)   the magnet is being held steady - No deflection

_______________

Q2. How does the maximum deflection of the galvanometer appear to depend on the speed with which the magnet is moved? Why

faster the magnet is moved the faster the galvanometer deflects. Due to sudden, fast movement, there is suddent increase in flux, hence sudden emf.

____________

Q3. How do your observations lend support to the statement: "A steady magnetic field cannot induce currents in a stationary conductor"

When there is no change in magnetic field, then there is no flux or change in flux. When there is no change in flux, no induced emf will set up and hence no induced current.

____________

Q4. Does the galvanometer deflect to the left or right while the current in the smaller coil is

a)   increasing - right

b) decreasing - left

c) not changing - middle - no deflection

______________

Q5. State, giving reasons, whether the answers given to Q.4. are to be expected on the basis of those given in Q.1

yes, that's what the result should be as per the theory

____________

Q6. What is the effect of the presence of the rod on the current induced in the larger solenoid

displacement will be more

___________

Q7. How does the induced current depend on the rate at which the current in the smaller solenoid is altered

when the rod moves faster, induced current is more

__________

Q8. What does the graph indicate

please just draw the graph using your data. You should get a straigh line. It means galvanometer displacement and current are directly proportional.