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EXPERIMENT 12 Current Balance Introduction The current balance is used to measure the force of repulsion between identical, oppositely di-rected, currents in parallel conductors. In this experiment you will: 1) Determine how the magnetic force of one current-carrying conductor on a parallel current-
Figure 1: The current balance setup. EXPERIMENT In this experiment you will use a current balance in which the upper conductor is free to pivot on knife edges. The upper conductor is balanced so that the wires are a small distance apart.
Experiment 18: The Current Balance. From Left to Right: Power Supply, Current Balance Assembly, Ammeter (20A DCA scale, 20A jack). North pole of magnet is red; south pole of magnet is white (standard). The magnetic field is from north to south (red to white). Text: Magnetic force, magnetic field.
Advance Reading. Text: Magnetic force, magnetic field. Objective. The objective of this experiment is to measure the ef-fects of a magnetic field on a current carrying conduc-tor. Theory. A magnetic field exerts a force, ~FB, on a moving charge. The magnitude of ~FB is: FB = qvB sin (19.1)
Quick demonstrations and activities. Practical Activity for 11-14 14-16 16-19. The activities in this collection are all easy to set up, require minimal kit and will take less than 20 minutes to run.
21 Ιαν 2017 · Carefully wire the current balance apparatus in series with the 10 turn coil, Fluke Mulitmeter, and rheostat. Look at Figures 1 and 2 for guidance. The current balance is supplied by about 9 V DC from red and black banana plugs on the wall strip.
The force acting on a current-carrying conductor loop in a uniform magnetic field (Lorentz force) is measured with a balance. Conductor loops of various sizes are suspended in turn from the balance, and the Lorentz force is determined as a function of the current and magnetic induction.
