Saturday

April 19, 2014

April 19, 2014

Posted by **Janice** on Saturday, June 4, 2011 at 6:48am.

Grill = 6A

Desk lamp = 0.6A

Convector heater = 4.5

a(ii) which of these has the greatest resistance ? Explain how you can tell.

(ii) calculate the resistance of the grill

(iii) calculate the power rating of the convector heater

(b) the plug fitted to the convector heater has three wires : live,neutral,earth.

(i) which wire in the plug has no current passes in normal circumstances. Explain the safety of this wire.

(ii) why is it important that the wire connecting the heater to the main supply have a low resistance?

- Physics -
**drwls**, Saturday, June 4, 2011 at 7:59amSomeone will be happy to critique your thoughts. The three apliances are wired in parallel to the 240 V supply. Because of Ohm's Law, current is inversely proportional to resistance.

Take it from there.

The subject is physics, not physic. A physic is a laxative.

**Related Questions**

Am I doing Algerba right? - 6a for a = 3 and a = -4 So is it A. 6a = 6*3 = 18? B...

physics 102 - three lamps connected to a 120-V AC (rms) household supply ...

Physics - A lamp (R = 151 ), an electric heater (R = 24 ), and a fan (R = 49 ) ...

algebra - Given g(x) = –2x – 1, find g(3a). G(3a)=-2(3a)-1 = -6a-1 = -5 is this ...

physical science - the headlamp and 2 identical tail lamp are conected in ...

Math! - 6a + 5b = 10 , 6a - b = -110 a=________ b=_________ 6a + 5b = 10 6a - b...

Math - 6a(3a-2) + 12b(3a-2) Is it correct if i multiplied 6a by 3a then 6a by -2...

Math Help - (6a)^8*(6a)^7 I get 36a^15 but I feel this is wrong

Algebra - solve by elimination: 6a+2b = -48 -6a+b = 57 What is the solution set...

math - can someone help me find the LCM? 35c^6a^8, 5c^3a^3, 21c^6a^3