A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is
Sahay Sir > Question Answers > A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is
A square non conducting loop, 20 cm, on a side is placed in a magnetic field. The centreof side AB coinsides with the centre of magnetic field. The magnetic field is increasing at the rate of 2T/s. The potential difference between B and C is
10
Sep
A square non conducting loop, 20 cm, on a side is placed in a magnetic field. The centreof side AB coinsides with the centre of magnetic field. The magnetic field is increasing at the rate of 2T/s. The potential difference between B and C is 20 cm A square non conducting loop A straight wire [...]
The magnetic field within cylindrical region whose cross – section is indicated starts increasing at a constant rate α tesla/sec . The graph showing the variation of induced field with distance r from the axis of cylinder is
10
Sep
The magnetic field within cylindrical region whose cross – section is indicated starts increasing at a constant rate α tesla/sec . The graph showing the variation of induced field with distance r from the axis of cylinder is A straight wire of length L is bent into a semicircle. It is moved in a uniform [...]
Shows a smooth pair of thick metallic rails connected across a battery of emf ε having a negligible internal resistance. A wire ab of length l and resistance r can slide smoothly on the rails. The entire system lien in a horizontal plane and is immersed in a uniform vertical magnetic field B. At an instant t, the wire is given a small velocity v towards right. (a) find the current in it at this instant. What is the direction of the current?
10
Sep
Shows a smooth pair of thick metallic rails connected across a battery of emf ε having a negligible internal resistance. A wire ab of length l and resistance r can slide smoothly on the rails. The entire system lien in a horizontal plane and is immersed in a uniform vertical magnetic field B. At an [...]
Consider the situation shown in . The wire PQ has mass m, resistance r and can slide on the smooth, horizontal parallel rails separted by a distance l. The resistance of the rails is negligible. A uniform magnetic field B exists in the rectangualr region and a resistance R connects the rails outsided the field region At t= 0, the wire PQ is puched towards right with a speed v0. find (a) the current in the loop at an instant when the speed of the wire PQ is v,
10
Sep
Consider the situation shown in . The wire PQ has mass m, resistance r and can slide on the smooth, horizontal parallel rails separted by a distance l. The resistance of the rails is negligible. A uniform magnetic field B exists in the rectangualr region and a resistance R connects the rails outsided the field [...]
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A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is ,
Consider the situation shown in . The wire PQ has mass m ,
resistance r and can slide on the smooth ,
A pair of parallel conducting rails lie at right angle to a uniform magnetic field of 2.0 T as shown in the fig. two resistor 10 Ω and 5 Ω are to slide without friction along the rail. The distance between the conducting rails is 0.1 m. Then
10
Sep
A pair of parallel conducting rails lie at right angle to a uniform magnetic field of 2.0 T as shown in the fig. two resistor 10 Ω and 5 Ω are to slide without friction along the rail. The distance between the conducting rails is 0.1 m. Then A straight wire of length L is [...]
Fig. shows a conducting loop being pulled out of a magnetic field with a constant speed `v`.Which of the four plots shown in fig. may represent the power delivered by the putting agent as a function of the constant speed `v`.
10
Sep
Fig. shows a conducting loop being pulled out of a magnetic field with a constant speed `v`.Which of the four plots shown in fig. may represent the power delivered by the putting agent as a function of the constant speed `v`. A straight wire of length L is bent into a semicircle. It is moved [...]
As shown in the figure a metal rod makes contact and complete the circuit. The circuit is perpendicular to the magnetic field with B=0.15 tesla. If the resistance is 3 Ω force needed to move the rod as indicated with a constant speed of 2 m/sec is
10
Sep
As shown in the figure a metal rod makes contact and complete the circuit. The circuit is perpendicular to the magnetic field with B=0.15 tesla. If the resistance is 3 Ω force needed to move the rod as indicated with a constant speed of 2 m/sec is A straight wire of length L is bent [...]
A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is
10
Sep
A straight wire of length L is bent into a semicircle. It is moved in a uniform magnetic field with speed v with diameter perpendicular to the field. The induced emf between the ends of the wire is A straight wire of length L is bent into a semicircle. It is moved in a uniform [...]