17. An alpha particle is placed in an electric field of 15 x 10^4NC^-1. Calculate the force on the particle
Ans. 4.8 x 10^-14N
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Given that ,
Charge (q) = 2e = 3.2 × (10)^-19 C
Electric field (E) = 15 x 10^4 N/c
As we know that ,
The electric force per unit charge is called electric field
Mathematically ,
The SI unit of electric field is N/c
Thus ,
F = 15 x 10^4 × 3.2 × (10)^-19
F = 48 × (10)^-15
F = 4.8 × (10)^-14 N
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