The basic magnetization curve for a ferromagnetic material is shown in figure. Then, the value of relative permeability is highest for the point
|
(a) P |
(b) Q |
(c) R |
(d) S |
(b) Q
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A 10 
capacitor and a 20 capacitor are connected in series across a 200 V supply line. The charged capacitors are then disconnected from the line and reconnected with their positive plates together and negative plates together and no external voltage is applied. What is the potential difference across each capacitor
|
(a) |
(b) |
(c) 400 V |
(d) 200 V |
In Thomson's experiment if the value of q/m is the same for all positive ions striking the photographic plate, then the trace would be
|
(a) Straight line |
(b) Parabolic |
(c) Circular |
(d) Elliptical |
An electric kettle has two heating coils. When one coil is used, water in the kettle boils in 5 minutes, while when second coil is used, same water boils in 10 minutes. If the two coils, connected in parallel are used simultaneously, the same water will boil in time
|
(a) 3 min 20 sec |
(b) 5 min |
(c) 7 min 30 sec |
(d) 2 min 30 sec |
