IB T5

2. the magnetic field induced by current going upward is directed __________ on a horizontal plane
3. attractive or repulsive force exerted between a magnet and a moving, electrically charged particle
5. potential difference measured across the terminal of the cell
8. as a cell approaches exhaustion, terminal pd drops (r)______
9. increasing the radius of a conducting wire _______ its resistance
14. this determines the direction of force on current carrying conductor, F=ILBsintheta
16. for most of the discharge time terminal pd remains constant, but a slow _____ in terminal pd does occur
17. region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle
18. work per unit charge made available by an electrical source, e=I(R+r)

1. the rate at which energy is supplied or used by a device, VI=I2R=V2/R
4. electrical resistance from materials inside the cell
6. there is no magnetic fore on a moving charge if the charge moves in the ______ of the field, F=qvBsintheta
7. once discharged it cannot be recharged and must be disposed
10. can be recharged by passing charge in the opposite direction
11. slope of an R versus (I/A) graph gives us this in ohm meters
12. supplying electrical energy to a high resistance conductor is converted into ____ energy
13. if current is switched off, the terminal pd ____ and may reach the manufacturer’s quoted emf again
15. Terminal pd is ______ than the manufacturer’s quoted emf