State the difference between Fleming's Left-Hand Rule and Fleming's Right-Hand Rule. Name the electric devices where these rules find an important application.
Fleming's Left-Hand Rule: Fleming's Right-Hand Rule:
This rule is used to determine the direction of magnetic force This rule is used to determine the direction of induced electric current.
Centre finger/ middle finger signifies for electric current. Centre finger/ middle finger signifies induced or generated current within the conductor.
Thumb signifies the direction of the magnetic force. Thumb points the direction of the motion of conductor.
Application: The direction of the magnetic field inside the solenoid is determined by Right-hand thumb rule. Application: The direction of induced current within an electric generator is determined by Fleming's right-hand rule
The figure shows a part of an electric circuit. The wires AB,CD and EF are long and have identical resistances. The separation between the neighboring wires is 1.0cm . The wires EA and BF have negligible resistance and the ammeter reads 30 A. Calculate the magnetic force per unit length on AB and CD.
A beam of electrons is moving with constant velocity in a region having simultaneous perpendicular electric and magnetic fields of strength 20V/m and 0.5T respectively at right angles to the direction of motion of the electrons. Then the velocity of electrons must be
State the rule to determine the direction of a (I) magnetic field produced around a straight conductor-carrying current (ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it, and (iii) current induced in a coil due to its rotation in a magnetic field.
A long straight wire carries a current $$I_{0}$$. At distances $$a$$ and $$b$$ from it there are two other wires, parallel to the former one, which are interconnected by a resistance $$R$$ (Fig.). A connector slides without friction along the wires with a constant velocity $$v$$. Assuming the resistances of the wires, the connector, the sliding contacts, and the self-inductance of the frame to be negligible, find: (a) the magnitude and the direction of the current induced in the connector; (b) the force required to maintain the connector's velocity constant.
The direction of induced potential difference is given by :
Write true or false for the following statements : Fleming's right hand rule can be used to find the direction of magnetic field.
State the explain Fleming's right hand rule.
State Fleming's right hand rule.
The direction of induced current is obtained by:
A conducting rod AB moves parallel to the x-axis in a uniform magnetic field pointing in the positive z direction. The end A of the rod gets positively charged.