1. [Show][Hide]
   2. 
   Explanation: The earth's magnetic field acts like a magnetic bottle trapping the charged particles coming from the sun, they spiral back and forth along the field lines only getting close to the atmosphere at the poles.
   
   
2. [Show][Hide]
   2. 
   Explanation: Paths have same redius so mass is the same but force is in opposite directions so must have  opposite charge.
   B is positive and A is negative.
    
   
   
3. [Show][Hide]
   3. 
   Explanation: Current opposite to charge movement use Flemmings left hand rule.
   
   
4. [Show][Hide]
   1. 
   Explanation: Current same direction as charge. use Flemmings left hand rule.
   
   
5. [Show][Hide]
   3. 
   Explanation: F = BIL
   I =V/R so F = BVL/R
   R= BVL/F = 0.05 x 6 x 0.03/1x10^-3 = 9Ω
   
   
6. [Show][Hide]
   2. 
   Explanation: Because its not next to the angle.
   
   
7. [Show][Hide]
   4. 
   Explanation: F = BIL = 10 x 10^-3 x 5 x 0.04 = 0.002
   
   
8. [Show][Hide]
   3. 
   Explanation: Flemings left hand rule.
   
   
9. [Show][Hide]
   4. 
   Explanation: Current is parallel with field.
   
   
10. [Show][Hide]
    1. 
    Explanation: Flemmings Left hand rule.
    
    

All answers: [Show] [Hide]