358697 It is desired to measure the magnitude of field between, the poles of a powerful loudspeaker magnet. A small flat search coil of area \(2.0 {~cm}^{2}\) with 20 closely wound turns is positioned normal to field direction, and then quickly snatched out of the field region. The total charge flown in the coil (measured by a ballistic galvanometer connected to the coil) is \(10\,{mC}\). The resistance of the coil and the galvanometer is \(1 \Omega\). The field strength of the magnet would be

358698 The concentric and coplanar coils have radii \(a\) and \(b(b > > a)\) as shown in figure. Resistance of the inner coil is \(R\). Current in the outer coil is increased from 0 to \(i\), then the total charge circulating the inner coil is:

358699 Magnetic flux in a circuit containing a coil of resistance \(2 \Omega\) changes from \(2.0\;Wb\) to \(10\;Wb\) in \(0.2\sec \). The charge passed through the coil in this time is

358700 Some magnetic flux is changed from a coil of resistance \(10 \Omega\). As a result, an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in weber is

358697 It is desired to measure the magnitude of field between, the poles of a powerful loudspeaker magnet. A small flat search coil of area \(2.0 {~cm}^{2}\) with 20 closely wound turns is positioned normal to field direction, and then quickly snatched out of the field region. The total charge flown in the coil (measured by a ballistic galvanometer connected to the coil) is \(10\,{mC}\). The resistance of the coil and the galvanometer is \(1 \Omega\). The field strength of the magnet would be

358698 The concentric and coplanar coils have radii \(a\) and \(b(b > > a)\) as shown in figure. Resistance of the inner coil is \(R\). Current in the outer coil is increased from 0 to \(i\), then the total charge circulating the inner coil is:

358699 Magnetic flux in a circuit containing a coil of resistance \(2 \Omega\) changes from \(2.0\;Wb\) to \(10\;Wb\) in \(0.2\sec \). The charge passed through the coil in this time is

358700 Some magnetic flux is changed from a coil of resistance \(10 \Omega\). As a result, an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in weber is

358697 It is desired to measure the magnitude of field between, the poles of a powerful loudspeaker magnet. A small flat search coil of area \(2.0 {~cm}^{2}\) with 20 closely wound turns is positioned normal to field direction, and then quickly snatched out of the field region. The total charge flown in the coil (measured by a ballistic galvanometer connected to the coil) is \(10\,{mC}\). The resistance of the coil and the galvanometer is \(1 \Omega\). The field strength of the magnet would be

358698 The concentric and coplanar coils have radii \(a\) and \(b(b > > a)\) as shown in figure. Resistance of the inner coil is \(R\). Current in the outer coil is increased from 0 to \(i\), then the total charge circulating the inner coil is:

358699 Magnetic flux in a circuit containing a coil of resistance \(2 \Omega\) changes from \(2.0\;Wb\) to \(10\;Wb\) in \(0.2\sec \). The charge passed through the coil in this time is

358700 Some magnetic flux is changed from a coil of resistance \(10 \Omega\). As a result, an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in weber is

358697 It is desired to measure the magnitude of field between, the poles of a powerful loudspeaker magnet. A small flat search coil of area \(2.0 {~cm}^{2}\) with 20 closely wound turns is positioned normal to field direction, and then quickly snatched out of the field region. The total charge flown in the coil (measured by a ballistic galvanometer connected to the coil) is \(10\,{mC}\). The resistance of the coil and the galvanometer is \(1 \Omega\). The field strength of the magnet would be

358698 The concentric and coplanar coils have radii \(a\) and \(b(b > > a)\) as shown in figure. Resistance of the inner coil is \(R\). Current in the outer coil is increased from 0 to \(i\), then the total charge circulating the inner coil is:

358699 Magnetic flux in a circuit containing a coil of resistance \(2 \Omega\) changes from \(2.0\;Wb\) to \(10\;Wb\) in \(0.2\sec \). The charge passed through the coil in this time is

358700 Some magnetic flux is changed from a coil of resistance \(10 \Omega\). As a result, an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in weber is