मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

If a charge of 420 C flows through a conducting wire in 5 minutes what is the value of the current? - Science and Technology

Advertisements
Advertisements

प्रश्न

If a charge of 420 C flows through a conducting wire in 5 minutes what is the value of the current?

बेरीज
Advertisements

उत्तर

The current flowing through the conducting wire is

`"I" = "Charge (Q)"/"Time (t)"`

⇒ `"I" = 420/(5 xx 60) = 1.4  "A"`

Hence, the current flowing through the wire is 1.4 A.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Current Electricity - Exercise [पृष्ठ ४५]

APPEARS IN

बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 3 Current Electricity
Exercise | Q 9. C. | पृष्ठ ४५

संबंधित प्रश्‍न

Which of the two is connected in series : ammeter or voltmeter?


The circuit diagram given below shows the combination of three resistors R1, R2 and R3

  

Find :
(i) total resistance of the circuit.
(ii) total current flowing in the circuit.
(iii) the potential difference across R1.

 

 


What happens to the other bulbs in a series circuit if one bulb blows off?


Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?


The following circuit diagram shows three resistors 2 Ω, 4 Ω and R Ω connected to a battery of e.m.f 2V and internal resistance 3 Ω. If the main current of 0.25 A flows through the circuit, find:

  1. the p.d. across the 4 Ω resistors,
  2. the p.d. across the internal resistance of the cell,
  3. the p.d. across the R Ω or 2 Ω resistors, and
  4. the value of R.


Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5 V, 5 Ω, 10 Ω and 15 Ω resistors and a plug key, all connected in series.


What do you mean by conductance of a conductor of a solution?

What happens to the resistance if the conductor is made thinner?

Explain briefly how a fuse protects an electric circuit.

Tick(✓) the correct choice in the following:

Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?


A charge of 80 C flows in a conductor for 2 minutes.
(a) Calculate the current flowing through the conductor.
(b) If the current through a heater is 4 A what charge must be passing in 8 seconds?


Find the effective resistance in the following circuit diagrams (Fig.):


What is the purpose of fuse in an electrical circuit?


An electric bulb is rated '100 W, 250 V'. How much current will the bulb draw if connected to a 250 V supply?


An electric iron is rated 750 W, 230 V. Calculate the electrical energy consumed by the press in 16 hours.


Fill in the blank :

1 mA = ............................. A.


The power of an electric device is a product of ______ and ______.


Problems for practice:

If 5A current flows through a circuit, then convert the current in terms of microampere?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×